WebbPlathelminthes is suggested. Introduction According to Remane (1955, 1956) establishing mor phological types is indispensable for elaborating nat ural evolutionary system of organisms and classify ing morphological types forms the basis for taxonom ic ranking, i.e. the natural system was considered by Webb1 sep. 2000 · Organization of statocysts in the Otoplanidae (Plathelminthes): An ultrastructural analysis with implications for the phylogeny of the Proseriata. Zoomorphology, 109 ... Sopott, B.1972. Systematik und Ökologie vor Proseriaten (Turbellaria) der deutschen Nord-seeküste Mikrofauna meeresboden13: 1–72. Google …
An elaboration of the evolutionary morphological basis for the ...
WebbThe general principles of evolutionary morphological systematics are considered. A variant of the classification system of the Plathelminthes is suggested. Key words Plathelminthes Platyhelminthes Turbellaria evolutionary morphology systematics Download conference paper PDF References Ax, P., 1961. WebbThis capsule encircles three different types of aciliary cells: several peripherally located flattened parietal cells, one central statolith forming cell (lithocyte) and two clusters of accessory cells. Intracapsular lumina exist which are different from extracapsular intercellular spaces. blacksburg high school marching band
Platyhelminthes - Wikispecies - Wikimedia
WebbThe evolutionary morphological approach in systematics is important especially for elaborating macrosystems dealing with vastly divergant groups where it is impossible to trace their real genealogy. The general principles of evolutionary morphological systematics are considered. Webb8 juni 2024 · The Platyhelminthes are acoelomate flatworms: their bodies are solid between the outer surface and the cavity of the digestive system. Most flatworms have a gastrovascular cavity rather than a complete digestive system; the same cavity used to bring in food is used to expel waste materials. WebbPlatyhelminthes (Phylum) Authority Minot, 1876 Status accepted Rank Phylum Parent Animalia Direct children (4) [sort alpha..] Subphylum Catenulida Subphylum Rhabditophora Class Turbellaria (not longer used; is a paraphyletic group) Subphylum Platyhelminthes incertae sedis (temporary name) Environment marine, brackish, fresh, terrestrial garnish of almonds